Trading system, PLEASE!!!
Please make it so that you can trade a # star champion for a # star champion. It is kind of hard to get 4 stars in the game, let alone a 4 star I like. Spider-Man is my favorite character and I only have one 4 star Spider-Man. Now of course, there would be safeguards to make sure people don't rip others off such as: people can see what is being traded, they can give trading options, and/or they can't trade a 1 star for a 6 star, it must be a 4 star for 4 star. I love the game itself, but I don't like the system for getting champions.